There are many different platforms of CRM that can be used on computers today. Each of these platforms can be used with relevant types of operating systems. There are certain CRM applications that are suitable for Windows while there are those that are suitable for Mac computers. There are five major differences between CRM for windows vs mac . 1. No Cross-Overs! To begin with, a computer that has Windows will only run applications that are suitable for only windows while a computer that uses Mac will have applications that are suitable for Mac only. Several companies that make applications and software are aware of this issue and they often create their software knowing that there are different kinds of operating system. CRM for Windows will not work on a machine that uses Mac because the machine will require CRM for Mac. There can be one cross over software packages that can be used for both.